Symmetry breaking in self-consistent models: Lessons from an exactly solvable many-fermion model

Details Symmetry breaking in self-consistent models: Lessons from an exactly solvable many-fermion model Symmetry breaking in self-consistent models: Lessons from an exactly solvable many-fermion model

2009-11-11

arxiv.org/abs/0911.2184v1

Physics

Condensed Matter

Quantum Gases

Scientific paper

This work presents a many-fermion Hamiltonian with the following properties: 1) is exactly solvable, 2) has a second order insulator-metal quantum phase transition, 3) has a well defined mean field approximation and 4) its mean-field ground state displays a liquid-solid transition. The phenomenon of symmetry breaking in fermionic self-consistent models is discussed in the light of these remarkable properties of the many-body model.

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